diff options
Diffstat (limited to 'actioncable/test/client_test.rb')
-rw-r--r-- | actioncable/test/client_test.rb | 253 |
1 files changed, 253 insertions, 0 deletions
diff --git a/actioncable/test/client_test.rb b/actioncable/test/client_test.rb new file mode 100644 index 0000000000..fe503fd703 --- /dev/null +++ b/actioncable/test/client_test.rb @@ -0,0 +1,253 @@ +require 'test_helper' +require 'concurrent' + +require 'active_support/core_ext/hash/indifferent_access' +require 'pathname' + +require 'faye/websocket' +require 'json' + +class ClientTest < ActionCable::TestCase + WAIT_WHEN_EXPECTING_EVENT = 8 + WAIT_WHEN_NOT_EXPECTING_EVENT = 0.5 + + def setup + ActionCable.instance_variable_set(:@server, nil) + server = ActionCable.server + server.config.logger = Logger.new(StringIO.new).tap { |l| l.level = Logger::UNKNOWN } + + server.config.cable = { adapter: 'async' }.with_indifferent_access + server.config.use_faye = ENV['FAYE'].present? + + # and now the "real" setup for our test: + server.config.disable_request_forgery_protection = true + server.config.channel_paths = [ File.expand_path('client/echo_channel.rb', __dir__) ] + + Thread.new { EventMachine.run } unless EventMachine.reactor_running? + Thread.pass until EventMachine.reactor_running? + + # faye-websocket is warning-rich + @previous_verbose, $VERBOSE = $VERBOSE, nil + end + + def teardown + $VERBOSE = @previous_verbose + end + + def with_puma_server(rack_app = ActionCable.server, port = 3099) + server = ::Puma::Server.new(rack_app, ::Puma::Events.strings) + server.add_tcp_listener '127.0.0.1', port + server.min_threads = 1 + server.max_threads = 4 + + t = Thread.new { server.run.join } + yield port + + ensure + server.stop(true) if server + t.join if t + end + + class SyncClient + attr_reader :pings + + def initialize(port) + @ws = Faye::WebSocket::Client.new("ws://127.0.0.1:#{port}/") + @messages = Queue.new + @closed = Concurrent::Event.new + @has_messages = Concurrent::Semaphore.new(0) + @pings = 0 + + open = Concurrent::Event.new + error = nil + + @ws.on(:error) do |event| + if open.set? + @messages << RuntimeError.new(event.message) + else + error = event.message + open.set + end + end + + @ws.on(:open) do |event| + open.set + end + + @ws.on(:message) do |event| + message = JSON.parse(event.data) + if message['type'] == 'ping' + @pings += 1 + else + @messages << message + @has_messages.release + end + end + + @ws.on(:close) do |event| + @closed.set + end + + open.wait(WAIT_WHEN_EXPECTING_EVENT) + raise error if error + end + + def read_message + @has_messages.try_acquire(1, WAIT_WHEN_EXPECTING_EVENT) + + msg = @messages.pop(true) + raise msg if msg.is_a?(Exception) + + msg + end + + def read_messages(expected_size = 0) + list = [] + loop do + if @has_messages.try_acquire(1, list.size < expected_size ? WAIT_WHEN_EXPECTING_EVENT : WAIT_WHEN_NOT_EXPECTING_EVENT) + msg = @messages.pop(true) + raise msg if msg.is_a?(Exception) + + list << msg + else + break + end + end + list + end + + def send_message(message) + @ws.send(JSON.generate(message)) + end + + def close + sleep WAIT_WHEN_NOT_EXPECTING_EVENT + + unless @messages.empty? + raise "#{@messages.size} messages unprocessed" + end + + @ws.close + wait_for_close + end + + def wait_for_close + @closed.wait(WAIT_WHEN_EXPECTING_EVENT) + end + + def closed? + @closed.set? + end + end + + def faye_client(port) + SyncClient.new(port) + end + + def test_single_client + with_puma_server do |port| + c = faye_client(port) + assert_equal({"type" => "welcome"}, c.read_message) # pop the first welcome message off the stack + c.send_message command: 'subscribe', identifier: JSON.generate(channel: 'EchoChannel') + assert_equal({"identifier"=>"{\"channel\":\"EchoChannel\"}", "type"=>"confirm_subscription"}, c.read_message) + c.send_message command: 'message', identifier: JSON.generate(channel: 'EchoChannel'), data: JSON.generate(action: 'ding', message: 'hello') + assert_equal({"identifier"=>"{\"channel\":\"EchoChannel\"}", "message"=>{"dong"=>"hello"}}, c.read_message) + c.close + end + end + + def test_interacting_clients + with_puma_server do |port| + clients = 10.times.map { faye_client(port) } + + barrier_1 = Concurrent::CyclicBarrier.new(clients.size) + barrier_2 = Concurrent::CyclicBarrier.new(clients.size) + + clients.map {|c| Concurrent::Future.execute { + assert_equal({"type" => "welcome"}, c.read_message) # pop the first welcome message off the stack + c.send_message command: 'subscribe', identifier: JSON.generate(channel: 'EchoChannel') + assert_equal({"identifier"=>'{"channel":"EchoChannel"}', "type"=>"confirm_subscription"}, c.read_message) + c.send_message command: 'message', identifier: JSON.generate(channel: 'EchoChannel'), data: JSON.generate(action: 'ding', message: 'hello') + assert_equal({"identifier"=>'{"channel":"EchoChannel"}', "message"=>{"dong"=>"hello"}}, c.read_message) + barrier_1.wait WAIT_WHEN_EXPECTING_EVENT + c.send_message command: 'message', identifier: JSON.generate(channel: 'EchoChannel'), data: JSON.generate(action: 'bulk', message: 'hello') + barrier_2.wait WAIT_WHEN_EXPECTING_EVENT + assert_equal clients.size, c.read_messages(clients.size).size + } }.each(&:wait!) + + clients.map {|c| Concurrent::Future.execute { c.close } }.each(&:wait!) + end + end + + def test_many_clients + with_puma_server do |port| + clients = 100.times.map { faye_client(port) } + + clients.map {|c| Concurrent::Future.execute { + assert_equal({"type" => "welcome"}, c.read_message) # pop the first welcome message off the stack + c.send_message command: 'subscribe', identifier: JSON.generate(channel: 'EchoChannel') + assert_equal({"identifier"=>'{"channel":"EchoChannel"}', "type"=>"confirm_subscription"}, c.read_message) + c.send_message command: 'message', identifier: JSON.generate(channel: 'EchoChannel'), data: JSON.generate(action: 'ding', message: 'hello') + assert_equal({"identifier"=>'{"channel":"EchoChannel"}', "message"=>{"dong"=>"hello"}}, c.read_message) + } }.each(&:wait!) + + clients.map {|c| Concurrent::Future.execute { c.close } }.each(&:wait!) + end + end + + def test_disappearing_client + with_puma_server do |port| + c = faye_client(port) + assert_equal({"type" => "welcome"}, c.read_message) # pop the first welcome message off the stack + c.send_message command: 'subscribe', identifier: JSON.generate(channel: 'EchoChannel') + assert_equal({"identifier"=>"{\"channel\":\"EchoChannel\"}", "type"=>"confirm_subscription"}, c.read_message) + c.send_message command: 'message', identifier: JSON.generate(channel: 'EchoChannel'), data: JSON.generate(action: 'delay', message: 'hello') + c.close # disappear before write + + c = faye_client(port) + assert_equal({"type" => "welcome"}, c.read_message) # pop the first welcome message off the stack + c.send_message command: 'subscribe', identifier: JSON.generate(channel: 'EchoChannel') + assert_equal({"identifier"=>"{\"channel\":\"EchoChannel\"}", "type"=>"confirm_subscription"}, c.read_message) + c.send_message command: 'message', identifier: JSON.generate(channel: 'EchoChannel'), data: JSON.generate(action: 'ding', message: 'hello') + assert_equal({"identifier"=>'{"channel":"EchoChannel"}', "message"=>{"dong"=>"hello"}}, c.read_message) + c.close # disappear before read + end + end + + def test_unsubscribe_client + with_puma_server do |port| + app = ActionCable.server + identifier = JSON.generate(channel: 'EchoChannel') + + c = faye_client(port) + assert_equal({"type" => "welcome"}, c.read_message) + c.send_message command: 'subscribe', identifier: identifier + assert_equal({"identifier"=>"{\"channel\":\"EchoChannel\"}", "type"=>"confirm_subscription"}, c.read_message) + assert_equal(1, app.connections.count) + assert(app.remote_connections.where(identifier: identifier)) + + subscriptions = app.connections.first.subscriptions.send(:subscriptions) + assert_not_equal 0, subscriptions.size, 'Missing EchoChannel subscription' + channel = subscriptions.first[1] + channel.expects(:unsubscribed) + c.close + sleep 0.1 # Data takes a moment to process + + # All data is removed: No more connection or subscription information! + assert_equal(0, app.connections.count) + end + end + + def test_server_restart + with_puma_server do |port| + c = faye_client(port) + assert_equal({"type" => "welcome"}, c.read_message) + c.send_message command: 'subscribe', identifier: JSON.generate(channel: 'EchoChannel') + assert_equal({"identifier"=>"{\"channel\":\"EchoChannel\"}", "type"=>"confirm_subscription"}, c.read_message) + + ActionCable.server.restart + c.wait_for_close + assert c.closed? + end + end +end |